2.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- European Organization for Nuclear ResearchCH1.3k papers
- National and Kapodistrian University of AthensGR1.3k papers
- National Institute of Chemical Physics and BiophysicsEE1.3k papers
- University of CyprusCY1.3k papers
- Universidad Autónoma de MadridES1.3k papers
- California Institute of TechnologyUS1.3k papers
- Charles UniversityCZ1.3k papers
- Cornell UniversityUS1.3k papers
- Tata Institute of Fundamental ResearchIN1.2k papers
- National Central UniversityTW1.2k papers
- University of BristolGB1.2k papers
- University of SplitHR1.2k papers
157 papers · 1 filter
Thermal effects and finite-temperature cosmology in perturbatively stabilized large volume scenarios
Vasileios Basiouris
We analyze finite-temperature effects in the perturbative Large Volume Scenario (LVS), examining the dynamics of thermalized Kähler moduli and the stability of thermally induced va…
5D Rotating Black Holes as dark matter in Dark Dimension Scenario: Hawking Radiation versus the Memory Burden Effect
George K. Leontaris, George Prampromis
This work explores the possibility that five-dimensional primordial rotating black holes could account for all, or a significant portion, of the dark matter in our universe. Our an…
Toward a gravitational network: Bridging metric-affine gravity and no-scale supergravity
Ioannis D. Gialamas, Theodoros Katsoulas, Kyriakos Tamvakis
We consider a class of models in the framework of metric-affine gravity and establish their correspondence to the bosonic sector of a class of no-scale supergravity models. The exc…
Dynamically induced spin-2 mass in a Weyl-invariant framework
Ioannis D. Gialamas, Kyriakos Tamvakis
We combine the ghost-free bimetric theory of gravity with the concept of local Weyl invariance, realized in the framework of Einstein-Cartan gravity. The gravitational sector, char…
Systematic exploration of the non-geometric flux landscape
Shehu AbdusSalam, Xin Gao, George K. Leontaris +1
Given the huge size of the generic four-dimensional scalar potentials arising from the type II supergravities based on toroidal orientifolds, it is even hard to analytically solve…
On Formulating the Non-Geometric Scalar Potentials
George K. Leontaris, Pramod Shukla
In the context of four-dimensional type II supergravities, the successive application of various S/T-dualities leads to a generalized notion of fluxes, which includes certain (non-…
Free Fermionic Constructions of Heterotic Strings
Ioannis Florakis, John Rizos
This chapter is an introduction to the Free Fermionic Formulation of String Theory, with emphasis on heterotic model building. After a brief review of bosonization in two dimension…
Reading-off the non-geometric scalar potentials with U-dual fluxes
Sayan Biswas, George K. Leontaris, Pramod Shukla
In the context of four-dimensional type IIB superstring compactifications, the U-dual completion of the holomorphic flux superpotential leads to four S-dual pairs of…
Non-supersymmetric non-tachyonic heterotic vacua with reduced rank in various dimensions
Carlo Angelantonj, Ioannis Florakis, Giorgio Leone +1
We construct rigid non-supersymmetric heterotic vacua with reduced rank and no tachyons in six and four dimensions. These configurations are based on asymmetric orbifold compactifi…
A Lightning Introduction to String Theory
Carlo Angelantonj, Ioannis Florakis
We give a lightning introduction to critical string theory, including the 26-dimensional bosonic string, the 10-dimensional superstrings and heterotic strings with and without spac…
Global Embedding of Fibre Inflation in Perturbative LVS
Swagata Bera, Dibya Chakraborty, George K. Leontaris +1
We present a global embedding of the Fibre inflation model in perturbative large volume scenario (LVS) in which the inflationary potential is induced via a combination of string-lo…
Inflating in perturbative LVS: Global Embedding and Robustness
Swagata Bera, Dibya Chakraborty, George K. Leontaris +1
The perturbative LARGE volume scenario (LVS) is a promising moduli stabilisation scheme in which the overall volume modulus of the compactifying Calabi-Yau (CY) threefold is dynami…
Symplectic formulation of the type IIB scalar potential with U-dual fluxes
George K. Leontaris, Pramod Shukla
We present a symplectic formulation of the four-dimensional type IIB scalar potential arising from a flux superpotential which has four S-dual pairs of fluxes demanded by th…
Taxonomy of scalar potential with U-dual fluxes
George K. Leontaris, Pramod Shukla
In the context of four-dimensional type IIB supergravity theories, the U-dual completion arguments suggest to include four S-dual pairs of fluxes in the holomorphic superpot…
Tachyons and Misaligned Supersymmetry in Closed String Vacua
Carlo Angelantonj, Ioannis Florakis, Giorgio Leone
In a remarkable paper, Dienes discovered that the absence of physical tachyons in closed string theory is intimately related to oscillations in the net number of bosonic minus ferm…
Seeking de-Sitter Vacua in the String Landscape
George K. Leontaris, Pramod Shukla
In this report, we present a concise review on the various moduli stabilisation schemes proposed in the context of type IIB superstring compactifications using Calabi-Yau orientifo…
Three-Generation Super No-Scale Models in Heterotic Superstrings
Ioannis Florakis, John Rizos, Konstantinos Violaris-Gountonis
We derive the conditions for the one-loop contribution to the cosmological constant to be exponentially suppressed in a class of heterotic string compactifications with three gener…
Stabilising all Kähler moduli in perturbative LVS
George K. Leontaris, Pramod Shukla
In this work we investigate the moduli stabilisation problem and the requirements for de Sitter vacua within the framework of type IIB string theory. Using perturbative effects ari…
Refined Topological Amplitudes from the -Background in String Theory
Carlo Angelantonj, Ignatios Antoniadis, Ioannis Florakis +1
It was recently shown that the = 2 string topological amplitudes in the heterotic weak coupling limit generate a six-dimensional Melvin space, providing a description…
Particle physics and cosmology of the string derived no-scale flipped
Ignatios Antoniadis, Dimitri V. Nanopoulos, John Rizos
In a recent paper, we identified a cosmological sector of a flipped model derived in the free fermionic formulation of the heterotic superstring, containing the inflaton an…
Super No-Scale Models with Pati-Salam Gauge Group
Ioannis Florakis, John Rizos, Konstantinos Violaris-Gountonis
We construct and classify heterotic models where supersymmetry is spontaneously broken à la Scherk-Schwarz. The theories contain chiral matter transforming under an…
Remarks on the effects of quantum corrections on moduli stabilization and de Sitter vacua in type IIB string theory
Vasileios Basiouris, George K. Leontaris
The rôle of string loop corrections on the existence of de Sitter vacua and the moduli stabilization problem is examined in type IIB effective theories. The fundamental building bl…
Hybrid inflation and waterfall field in string theory from D7-branes
Ignatios Antoniadis, Osmin Lacombe, George K. Leontaris
We present an explicit string realisation of a cosmological inflationary scenario we proposed recently within the framework of type IIB flux compactifications in the presence of th…
Ultraviolet behaviour of Higgs inflation models
Ignatios Antoniadis, Anthony Guillen, Kyriakos Tamvakis
We study the ultraviolet behaviour of Higgs inflation models above the apparent unitarity violation scale arising from the large non minimal coupling to gravity, by computing on-sh…